Teledyne HDO9000, Руководство оператора

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Acquisition
Serial Trigger
The Serial trigger type will appear if you have installed serial data trigger and decode options. Select
the Serial type then the desired Protocol to open the serial trigger setup dialogs. For setup
instructions, see the software instruction manual at teledynelecroy.com/support/techlib under
Manuals > Software Options.
A 3.125 Gb/s Serial Trigger hardware option is available for HDO9000 oscilloscopes. This option
provides capability for 8b/10b symbol triggering. The trigger hardware is factory installed and is
permanently connected internally to C4. Complete information on the operation of this trigger can be
obtained in the High Speed Serial Triggers Instruction Manual .
Qualified Trigger
A Qualified trigger arms on the A event, then triggers on the B event. In Normal trigger mode, it
automatically resets after the B event, and re-arms upon the next matching A event. Unlike a basic
Edge or Pattern trigger with Holdoff, the A and B events can occur in different signals, allowing you to
use the state of one signal to "qualify" the trigger on another.
On the Trigger dialog, select MultiStage trigger type and choose Qualified .
On the Qualified dialog , choose the A and B events.
When B is an Edge or Pattern , a time window may be added to the trigger conditions by using the
When B Occurs buttons:
l
Any Time triggers if B occurs any time after being qualified by A.
l
Less Than triggers only if B occurs before the time set once qualified.
l
Greater Than triggers only if B occurs after the time set once qualified.
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Events triggers on the next B event after the specified N Events once qualified.
As with regular Holdoff , the counter may begin from the Acquisition Start or the Last Trigger Time .
Once you've selected the A and B events on the Qualified dialog, set up the conditions on the
respective "Event" dialogs exactly as you would a single-stage trigger .
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